|Table of Contents|

Mechanical Performance of Beam-column Connection with Upper Flange Welded-lower Flange Bolted(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2019年05期
Page:
106-118
Research Field:
Publishing date:

Info

Title:
Mechanical Performance of Beam-column Connection with Upper Flange Welded-lower Flange Bolted
Author(s):
YU You-sheng1; 2;  YUAN Peng-cheng1;  WANG Sheng3
(1. School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, Shandong, China; 2. Cooperative Innovation Center of Engineering Construction and Safety in Shandong Blue Economic Zone, Qingdao University of Technology, Qingdao 266033, Shandong, China; 3. Qingjian Group Co., Ltd., Qingdao 266071, Shandong, China)
Keywords:
connection with upper flange welded-lower flange bolted;  mechanical performance;  low cycle reversed loading;  energy dissipation
PACS:
TU311
DOI:
-
Abstract:
In order to study the appearance sequence of plastic hinge and splicing slippages, and the proportion of energy dissipation of splicing, two groups of test specimens were designed by changing the cross-section area of flange splice plate. The finite element analysis of the new connection under monotonic and low cycle reversed loading was simulated by the ABAQUS software. Taking the BASE specimen of beam-column connection with upper flange welded-lower flange bolted as an example, the failure modes, hysteresis curves and skeleton curves of the BASE specimen of beam-column connection with upper flange welded-lower flange bolted were compared with those of the “HU” connection and the traditional bolted-welded hybrid connection designed with the same parameters. The results show that the deformation and the slipping of splicing can be fully developed when the cross-section area of flange splice plate is 2/3-1.0 times as large as the flange. The deformation and slipping of splicing cannot be fully developed when the cross-section area of splice plate is 1.0-4/3 times as large as the flange. Under low cycle reversed loading, the failure modes of the two groups of connections with upper flange welded-lower flange bolted are similar. When the interstory drift angle of beam end is about 0.024 rad, the lower flange and the splice plate begin to slip. When the interstory drift angle of beam end is about 0.036 rad, the plastic hinge appears on the cantilever beam. During the whole loading process, the energy dissipation of the deformation and the slipping of splicing account for 39%-45% of the total energy dissipation. The ductility, energy dissipation and deformation of BASE specimen of beam-column connection with upper flange welded-lower flange bolted are lower than those of the “HU” connection designed with the same parameters, but are slightly higher than those of the traditional bolted-welded hybrid connection.

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Last Update: 2019-09-29